Set during the early days of the Second World War II, the plot follows a Russian spy who tries to infiltrate the British Secret Service in the hope of influencing US power brokers and swinging American public opinion in favour of fighting the Nazis.

Atwell will play the spy, Eva, with Rampling playing the same character in 1976.

Sewell will play British Secret Sevice agent Lucas Romer, who becomes Eva’s lover while training her to become a spy, while Dockery plays Eva’s daughter, Ruth, who discovers her mother’s secret years later.

Edward Hall will direct when shooting begins in South Africa and the UK later this summer.

Commenting on Sundance’s involvement, Sarah Barnett, general manager of the Sundance Channel, described Restless as “a perfect addition” to its slate of original scripted programming, which has already included co-productions such as Olivier Assayas’ Golden Globe-winning Carlos and the BAFTA-winning Appropriate Adult, featuring Emily Watson and Dominic West.